The original Plants Vs. Zombies became a genuine phenomenon after being ported to nearly every handheld device and console on the market. One of the original tower defence games, it combined easy to learn, hard to master strategy with a deliciously gonzo sense of humour. Whereas so many other games featuring the shambling undead were morose affairs, PvZ was brightly coloured, cartoonish and genuinely funny. However, when developers PopCap Games announced that they were making a third-person shooter in the same well-tapped vein as Gears Of War (Epic, Multi), more than a few eyebrows were raised. How exactly would the off-the-wall (lack of) sensibilities of the…